US3533848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sodium-sulfur fuel cell units
Assignee: Gates Energy Products Inc
•
Filing: 1967-04-20
•
Granted: 1970-10-13
•
Expires: 1987-04-20
Abstract
No abstract record available.
Inventors
- 👤 Oliver H Winn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:50
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/18; H01M8/184; H01M10/00; H01M10/36; H01M10/39; H01M10/3909; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1843698A
Cited
US2102701A
Cited
US2301021A
Cited
US3099587A
Cited
US3245836A
Cited
US3404036A
Cited
US3404035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |